What is a route filter?
A.
a list of prefixes that can be configured in a poilcy
B.
a single prefix that is configured separately and be referenced in a policy
C.
a list of prefixes that is configured separately and can be referenced in a policy
D.
a single prefix that can be configured within a policy
Ans > D) a single prefix that can be configured within a policy
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why not A)? ….here is a definition from the manual:”Route filters are lists of prefixes configured within a single routing policy or policy term”…
Thanks..
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Yes, A is the correct one since a route filter can be a list and not a single prefix.
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Answer is A.
The key is the intrinsic modularity of route filters that should match a single prefix ( with the exact statement ) or many different ones ( with the orlonger statement )
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According to others materials:
D.
a single prefix that can be configured within a policy
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A is correct
http://www.juniper.net/techpubs/en_US/junos13.2/topics/usage-guidelines/policy-configuring-route-lists-for-use-in-routing-policy-match-conditions.html#id-10270525
A route filter is a collection of match prefixes. When specifying a match prefix, you can specify an exact match with a particular route or a less precise match. You can configure either a common action that applies to the entire list or an action associated with each prefix.
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I believe the answer is not A but D. Here is a sample of the study guide:
Route filters are lists of prefixes configured within a single routing policy or policy term.
As example is given that clarifies things, here you see 3 seperate route-filters, each being 1 single prefix match type:
policy-statement policy-1 {
term reject-rfc1982-prefixes {
from {
route-filter 172.16.0.0/12 orlonger;
route-filter 192.168.0.0/16 orlonger;
route-filter 10.0.0.0/8 orlonger;
}
then reject;
}
}
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